US3898153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic reforming process with sulfur removal
Assignee: Sunoco Inc R&M
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Filing: 1973-11-23
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Granted: 1975-08-05
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Expires: 1993-11-23
Abstract
Abstract An improved catalytic reformer system wherein chloride compounds are removed from the feed, sulfur compounds contained in the total feed are converted to H2S in a hydrodesulfurization zone and the H2S is removed in an adsorbing zone containing a solid adsorbent.
Inventors
- 👤 Kenneth E Louder
- 👤 William A Ackerman
- 👤 Irene F Kress
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:05
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/02; C10G45/04; C10G2400/00; C10G2400/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
117 words
A PROCESS FOR CATALYTICALLY REFORMING A NAPHTA FEED STREAM CONTAINING SULFUR AND CHLORIDE COMPOUNDS IN THE PRESSENCE OF HYDROGEN WHICH COMPRISES A. PASSING THE FEED AND A HYDROGEN RECYCLE THROUGH A CHLORIDE REMOVAL ZONE, B. PASSING THE CHLORIDE FREE FEED AND HYDROGEN RECYCLE THROUGH A HYDRODESULFURIZATION ZONE WHEREIN THE SULFUR IS CONVERTED TO H2S AND A PACKED BED GRANULAR ZINZ OXIDE ABSORBENT WHEREIN THE H2S IS ADSORBED, C. PASSING SAID DESULFURIZED FEED THROUGH A CATAYTIC REFORMING ZONE UNDER REFORMING CONDITIONS WHEREIN REFORMING OF NAPHTHAS AND CONVERSION OF SULFUR COMPOUNDS TO H2S TAKES PLACE, D. WITHDRAWING FROM STEP (C) A GASEOUS STREAM TO BE RECYCLED TO STEP (A), AND E. WITHDRAWING A REFORMED NAPHTHA PRODUCT FROM STEP (C).
Claim 2
Dependent Claim
117 words
A PROCESS FOR CATALYTICALLY REFORMING A NAPHTA FEED STREAM CONTAINING SULFUR AND CHLORIDE COMPOUNDS IN THE PRESSENCE OF HYDROGEN WHICH COMPRISES A. PASSING THE FEED AND A HYDROGEN RECYCLE THROUGH A CHLORIDE REMOVAL ZONE, B. PASSING THE CHLORIDE FREE FEED AND HYDROGEN RECYCLE THROUGH A HYDRODESULFURIZATION ZONE WHEREIN THE SULFUR IS CONVERTED TO H2S AND A PACKED BED GRANULAR ZINZ OXIDE ABSORBENT WHEREIN THE H2S IS ADSORBED, C. PASSING SAID DESULFURIZED FEED THROUGH A CATAYTIC REFORMING ZONE UNDER REFORMING CONDITIONS WHEREIN REFORMING OF NAPHTHAS AND CONVERSION OF SULFUR COMPOUNDS TO H2S TAKES PLACE, D. WITHDRAWING FROM STEP (C) A GASEOUS STREAM TO BE RECYCLED TO STEP (A), AND E. WITHDRAWING A REFORMED NAPHTHA PRODUCT FROM STEP (C).
Claim 3
Dependent Claim
37 words
The process of claim 1 wherein said catalytic reforming utilizes catalyst selected from the group consisting of platinum on alumina, platinum and rhenium on alumina, platinum and iridium on alumina and platinum, rhenium and iridium on alumina.
Claim 4
Dependent Claim
25 words
The process of claim 2 wherein the hydrodesulfurization step utilizes a catalyst selected from the group consisting of cobalt-molybdenum on alumina and nickel-molybdenum on alumina.
Claim 5
Dependent Claim
31 words
The process of claim 3 wherein said chloride removal zone is a guard case containing a catalyst selected from the group consisting of copper on alumina and copper oxide on alumina.
Claim 6
Dependent Claim
20 words
The process of claim 4 wherein said adsorption takes place at a temperature in the range of 550* to 850*F.
Claim 7
Dependent Claim
67 words
The process of claim 5 wherein the reforming catalyst is selected from the group consisting of platinum on alumina, platinum and rhenium on alumina, platinum and iridium on alumina and platinum, rhenium and iridium on alumina, the adsorbent is zinc oxide and the chloride removal zone is a guard case containing a catalyst selected from the group consisting of copper on alumina and copper oxide on alumina.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-04 | 1979-02-03 | 1979-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-04 | 1983-02-03 | 1983-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-04 | 1987-02-03 | 1987-08-05 | $7700.00 | Window Closed / Lapsed |